OEM Carrier Gas Valve 24V 1/2" Natural/LP for Model YAC42110YACX102AK

This OEM combination gas valve (part number EF680015) is the factory-specified replacement for the Carrier YAC42110YACX102AK furnace. The gas valve is the heart of your heating system's fuel delivery — it receives a 24V signal from the control board and opens to allow precisely regulated gas flow to the burners for ignition. When it fails, common symptoms include a furnace that attempts ignition but produces no flame, repeated lockout codes, or a unit that runs the inducer and igniter but delivers no heat. A faulty gas valve can also stick partially open or closed, creating unsafe operating conditions that demand immediate replacement.

• Specs: 24VAC coil voltage | 1/2" NPT inlet & outlet | Single-stage slow-opening | Natural gas with LP conversion kit included | 0.28A | 50/60 Hz | Max inlet pressure: 1/2 PSI | Factory set at 3.5" W.C. (natural gas)
• OEM vs Generic: This is a genuine OEM Carrier part — factory-matched valve body, diaphragm tolerances, and coil specifications. Generic aftermarket valves vary in opening speed and pressure regulation accuracy, which can cause nuisance lockouts, improper combustion, and voided equipment warranties.
• Install difficulty: 4/5 — Gas valve replacement must be performed by a licensed HVAC technician or gas fitter. Tools required: pipe wrench, manifold pressure gauge, leak-detection solution, multimeter. Always shut off gas supply and electrical power before disconnecting. Verify outlet pressure post-install per manufacturer specifications.
• Warranty: 1-year OEM manufacturer warranty. In-stock units ship same business day from our warehouse.

Compatibility: Designed for the Carrier model YAC42110YACX102AK furnace. Verify inlet/outlet diameter, coil voltage, and gas type on your unit's data plate before ordering. This valve also works with compatible Bryant and Day & Night furnaces sharing the same valve specification. Have questions about fitment? Our HVAC parts specialists confirm compatibility before you order — contact us today and get your heat back on fast.